It is narrated from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was asked about the mosque whose foundation was laid on piety, and he (peace and blessings be upon him) said: "It is this mosque of mine." This hadith is sahih in its chain, and the two Shaykhs did not record it. Its supporting report (shahid), which is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him), is even more authentic than it.

Sayyiduna Abd al-Rahman bin Abi Sa'id al-Khudri (may Allah be pleased with him) narrates from his father that he said: The mosque whose foundation was laid on piety is the mosque of the Messenger of Allah (peace and blessings be upon him).

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that two men argued about the mosque whose foundation was laid on piety. One said: "It is the mosque of the Messenger of Allah (peace and blessings be upon him)", while the other said: "It is the mosque of Quba." Then the two of them came to the Messenger of Allah (peace and blessings be upon him) and asked him (peace and blessings be upon him) about it, and the Messenger of Allah (peace and blessings be upon him) said: "The mosque whose foundation was laid on piety is this mosque of mine."

It is narrated from Sayyiduna Abu Ayyub al-Ansari, Sayyiduna Jabir bin Abdullah and Sayyiduna Anas bin Malik (may Allah be pleased with them) that when this verse was revealed: "In it are men who love to purify themselves" [Surah al-Tawbah: 108] , the Messenger of Allah (peace and blessings be upon him) said: "O company of the Ansar, Allah Almighty has praised you most highly regarding purification. So what is this purification of yours?" They said: "We perform ablution (wudu) for the prayer, we take the ritual bath (ghusl) after major ritual impurity (janabah), and we cleanse ourselves (istinja) with water." He (peace and blessings be upon him) said: "That is it (the excellent way), so hold fast to it." This hadith is sahih in its chain, and the two Shaykhs did not record it.

It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) was asked about "al-Sa'ihin" (those who travel), and he (peace and blessings be upon him) said: "They are those who fast." [Surah al-Tawbah: 112] This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), and they did not record it. However, most of the students of Ibn Uyaynah narrated it as mursal and did not mention Sayyiduna Abu Hurayrah (may Allah be pleased with him) in its chain.

It is narrated from Sayyiduna Ali (may Allah be pleased with him) that he said: I heard a man seeking forgiveness for his parents while they were both polytheists. I said: "Why are you praying for forgiveness for your parents when they are polytheists?" He said: "Did Sayyiduna Ibrahim (peace be upon him) not seek forgiveness for his father while he was a polytheist?" So I mentioned this to the Prophet (peace and blessings be upon him), upon which this verse was revealed: "It is not for the Prophet and those who believe to ask forgiveness for the polytheists, even if they are relatives, after it has become clear to them that they are the people of Hellfire. And Ibrahim's (peace be upon him) asking forgiveness for his father was only because of a promise he had made to him; but when it became clear to him that he was an enemy of Allah, he disassociated himself from him. Indeed, Ibrahim (peace be upon him) was tender-hearted and forbearing" [Surah al-Tawbah: 113 - 114] . This hadith is sahih in its chain, and the two Shaykhs did not record it.

It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that when Abu Talib died, the Messenger of Allah (peace and blessings be upon him) said: "O uncle, may Allah have mercy on you and forgive you. I will keep seeking forgiveness for you until Allah, the Mighty and Majestic, forbids me." So the Muslims too began seeking forgiveness for their deceased polytheist relatives, and Allah Almighty revealed this verse: "It is not for the Prophet and those who believe to ask forgiveness for the polytheists, even if they are relatives, after it has become clear to them that they are the people of Hellfire" [Surah al-Tawbah: 113] . This hadith is sahih in its chain, and the two Shaykhs did not record it. After it, Abu Ali (may Allah have mercy on him) told us: "I do not know anyone other than Abu Humah al-Yamani who narrated this hadith from Sufyan with a connected chain, and he is trustworthy (thiqah), whereas the other students of Ibn Uyaynah narrated it from him as mursal."